Pump attachment



W. J; McADAMS AND E. A. SPOHRER. PUMP ATTACHMENT.

AFPLICATION FILED JULY 27.1920.

1,405,053. I Patented Jan. 31, 1922.

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' i PUMP ATTACHMENT.

f Specification of Letters iPatentf Application filed July 27, 1920. Serial No. 399,518.

lift pumps andconsists of adjustablefand' interchangeable air supplying nozzles, the object ofwhich is to provide the pump and its supply pipe with more or less air so that in pumping or moving pulverized orgranulated solids the air blast will tend to disinte grate and separate the particles in order to readily effect themovement of coal, grain, coffee, rice, oil shale, shavings, saw-dust and sand.

These and other objects and details of they invention are more fully described in -the following specification, set forth in the appended claims and illustrated in the ac companying drawings, wherein:

Fi 1 is a side elevation of the improved attac ment.

Fig. 2 is a vertical longitudinal sectional view of the same.

Fig. 3 is a side view of a modified form I of nipple plug.

Fig. 4 is a face view of the same. Fig. 5 is a view showing. another form of pipe to which the invention may be applied;

The improvement comprises a casing 5 having the suction inlet 6 and thedischarge outlet 7, the latter being reduced and opposite a heel 8 that is perforated to contain the bushing 9 that is screwed therein. The bushing 9 is the terminus of an air supply pipe 10 and while threaded externally at one end for the heel, it is internally threaded for the pipe and for a plug 11, the latter filling its extremity. The bushing 9 has the hexagonal part 12 while the plug has the polygonal head 18 that is forced against the shoulder 14: by the bushing to lock it.

The plug is'perforated and tapped for the insertion of a nipple 15 that is'adapted 'to discharge the air into the casing and towards the outlet 7 as the material moves in that direction. 7

When it is desired to provide a greater amount of air than will pass into the nipple 15, a nipple 16 may be provided as shown in Figs. 3 and 4;, and where the latter nipple said cap bearing.

is surrounded by several more smaller nipples 17 of suflicient number to provide air in quantities for differentmaterials. The 7 weight of some materials require greater or less air in lifting the same while material g that shows a tendency to adhere and clog i also require various air mixtures;

, Plugs with suitable 'air inlets are therefore supplied by removing the plug and substituting the properone and this operat on is simple and quickly performed. i

' It is obvious that the parts may be other.- i

wise arranged and modified without depart,- ing from the essential features abovede scribed or from the scope ofthe appended 1 claims. 7

' What'we claim as new is:

f 1. The pump attachment herein fdescribed, compris ng a coupling having an'inlet and outlet portion and a heel extending from said inlet, Sfild heel having a threaded openf ing, a chamber, and a shoulder around said i chamber, a threaded injector pipe engaging the threaded opening of said heel, extending into the chamberand' formed with interior threads, a cap having a threaded portion en; gaging said interior; threads and bearing against said, shoulder'and a nozzle extending from said capinto. the outlet-of said coupling 2. The pump connection herein described,

inlet, a threaded outlet, and a heel extendconsisting of a casing having a threaded H a chamber, said chamber being formed with an annular shoulder, an air supply pipe fit ting in said chambenand a cap fitting in said air supply pipe and carrying a nipple extending into said outlet of the casing and shoulder. I l g p 3. The herein described pump attachment consisting of a unit having an inlet and an outlet forming acoupling or connection, a

against said annular .ioo heel formed upon said unit, and having-a chamber SHI'IOUIIdGdJOY a shoulder, an in a head connected to said pipe, and bearing against said shoulder, and; a. nozzle con-.

f jector pipe" connected to said heel portion 4:. The herein described coupling unit having an inlet formed with threads and an 1 outlet formed with threads, whereby proper connection is made, and a heel [extending from said unit, and providing. a chamber having a shoulder, screw threads Within said her and a nozzle projecting from said head I 7 heel, a threaded injector pipe engaging the into the said unit.

threads of said heel, said pipe being also In testimony whereof We our sig- 1- provided with interior threads, a head, natures.

5 formed With a threaded sleeve to engage the interior threads of said pipe, said head bear- I WILLIAM J. MQADAMS. ing against the shoulder around said oham- EDWARD A. SPOHRER. V 

